Porthole for ships



l.. scHRlEvER E1 AL Pom-HOLE Fon. sxuPs original Filed Jan. 27,' 1927 Aug. 26, 1930.

UNITED STATES A, LDER SCHRIEVER, or nANzIG-LANGFUHn,.,DANZG,.AND ALFRED MICHAEL, oF j* v f BREMEN, GERMANY A; it

PORTHOLE non sains i. Q

origiiiai application sied January 27,1192?, serial No. '1e4',os4, anla in" Germanyyniiie :23, isael LIiiirigiegi *j and this application filed February 29.1928. lSerial` No, 258,053.' C 'v Y The invention relates to a special modification or constructional form of the ships portlhole according to my copeiidingV application filed January 27, 1927, Serial No. 164,064, of

o which this application is 'a divisional.-

According to the known construction, each individual ships portliole has its own suction device, which is in direct communication with the airV passage of the portlight, whereas ac-V lU' cording to the invention, the air passage of `the portlight communicates with a pipe from which a ventilator or rfan sucks. As com'-v pared withwhat is known, this arrangement has the advantage that the shutterrof the l5 portlight can be closed and' opened-without the suction devicebein'g removed. Several portholes may also be connected to this suction device. l e

The invention is shown in the accompany- 90 ing ldrawing by way of example. in which Fig. 1 is a verticalcrosssection through a ships porthole according tothe invention.

Fig. 2 is an elevation of the ships porthole 25 (viewed from Within).

ployed throughout the several views to indicate corresponding parts.

n A ships porthole with a Ventilating var-` rangement according tothe invention consists n 0 essentially of a frame 1, which'contains the glass disc or pane 2 of the shipsporthole and which is pressed vin any suitable manner against la frame' 3 connected to the wall of the ship with interposed packing means. In

30 this frame,'passages 4 are provided, which communicate throiigh openings 5, vwith the outer air. closing members kfor instance.' balls 7 ,preventing the penetrationof Water when 40 it rises to the level of the porthole. The path of the air'current' from the outsideis'indicated by thearrow A. Ithas lalready been proposed' to provide on the inside of such a lframe a strong shutter 8, by which the port- .g5 hole can be completely closed. Thisshut-A tei" is adapted to swing about abolt 9 and is tightened by a screw bolt 10 by means of a fly nut 11. The screw bolt 10 is adapted to swing about a bolt 12.

530 There is provided on the periphery ofthe e Similar characters of reference are em `frainerl 'a slotw13, which Yis'connected lto a i.

fventilatingdevice 15 by a tube 14g; p.

'This arrangement enables the `sliutter'S'to be "mo'v'e'idfT .without 'thev suction device being y removed. ,'It isk alsorpossible to coniiectseveral ships portholes to a single suctiondevice.

Having now fully described the invention V what is claimed as new and desired tol be sef cured by Letters Patent is: Y. e 1. A ships porthole, comprising in combination an outer. frame fixed tov the wall of the ship, a glass pane, a second frame sur# rounding the glass pane between the glassr pane andthe outer frame on theV ships wall, air passages in the second frame, a suction v oo l opening in the said second frame on the peripheralL surface of the porthole and in the upper part of the said traine, openings lin the second frame on the outertside thereof, connected by the said air passages to the suction opening, closing members in the second the porthole from the inside thereof, a casing, a fan in thecasing, apipe connection between tlie suction'opening'and the casing containing the fan, so that the shutter' mayI the inner and outer channels from each other and having holes` establishing communication betweenthe linner and outer annular frame forA closing they openings on the outer e side nnder the vaction of the water on the'y outside of the porthole, a shutter pivotally '1. mounted an the wall of the ship tor closing khollow frame'having inner and outer annular ventilatingrchannels, a partition separating channels in the lowerpart of the second frame, means for closing the holes in the partition when acted `upon by Water pressure from the outside of the porthole, a suction device situated ,a considerable distance from the porthole, and a pipe establishing communication between the suction device and the inner channel.

A 3. A ships. porthole comprising in combi- ,1,90

nation an outer frame fixed to the wall of the ship, a second inner hollow frame detachably connected to the first frame, a glass pane surrounded by the second frame, a partition in .the hollow part of the second frame to fonm imler and outer Ventilating annular channels and having holes establishing communication between the channels in the lower pant ofthe second trame, means* for 4closing the holes in the partition, the closing Ameans comprising metal balls, a suction device situated a considerable distance from `the Vporthole anda pipe having one `end in communication with the suction device and the other end enlarged and communicating with the inner annular :.channel.

In testimony whereof we have Asigned our names to this specification. 'LDER no ALFRED MICHAEL. 

